LINEMAN APPRENTICE EVALUATION EXAM QUESTIONS
AND SOLUTIONS GRADED A+
✔✔Example of a good insulator - ✔✔Glass, porcelain, rubber, paper, polyethylene, and
fiberglass
✔✔What is the unit of electrical current - ✔✔ampere
✔✔What instrument is used to measure electric current - ✔✔Ammeter
✔✔What is the unit of electrical pressure - ✔✔volt
✔✔What is the unit of electrical power - ✔✔Watt
✔✔A _________ registers watts or kilowatts, and by reading it one can tell how much
power any piece of apparatus is consuming. - ✔✔Wattmeter
✔✔What does the product of power and time equal - ✔✔energy
✔✔What is the unit of resistance for wire? - ✔✔Ohm
✔✔What is the formula for ohms law - ✔✔V=IR
✔✔Define an alternating current - ✔✔An alternating current regularly changes direction.
✔✔What is the unit of an alternating-current frequency - ✔✔Hertz
✔✔Define the power factor of an alternating-current circuit - ✔✔the ratio of actual power
to the product of volts times amps
✔✔Describe the theory of operation of an electric transformer - ✔✔
✔✔Describe a typical electric system, itemizing the major parts of the system -
✔✔Generating station
Transmission
Sub transmission
Distribution
Distribution transformer to usable voltage
✔✔What is a transmission line - ✔✔A set of conductors energized at voltages over
69,000 volts and transmitting large block of electrical energy over relitivley long
distances.
✔✔How do the voltage levels of transmission and sub transmission lines compare - ✔✔
AND SOLUTIONS GRADED A+
✔✔Example of a good insulator - ✔✔Glass, porcelain, rubber, paper, polyethylene, and
fiberglass
✔✔What is the unit of electrical current - ✔✔ampere
✔✔What instrument is used to measure electric current - ✔✔Ammeter
✔✔What is the unit of electrical pressure - ✔✔volt
✔✔What is the unit of electrical power - ✔✔Watt
✔✔A _________ registers watts or kilowatts, and by reading it one can tell how much
power any piece of apparatus is consuming. - ✔✔Wattmeter
✔✔What does the product of power and time equal - ✔✔energy
✔✔What is the unit of resistance for wire? - ✔✔Ohm
✔✔What is the formula for ohms law - ✔✔V=IR
✔✔Define an alternating current - ✔✔An alternating current regularly changes direction.
✔✔What is the unit of an alternating-current frequency - ✔✔Hertz
✔✔Define the power factor of an alternating-current circuit - ✔✔the ratio of actual power
to the product of volts times amps
✔✔Describe the theory of operation of an electric transformer - ✔✔
✔✔Describe a typical electric system, itemizing the major parts of the system -
✔✔Generating station
Transmission
Sub transmission
Distribution
Distribution transformer to usable voltage
✔✔What is a transmission line - ✔✔A set of conductors energized at voltages over
69,000 volts and transmitting large block of electrical energy over relitivley long
distances.
✔✔How do the voltage levels of transmission and sub transmission lines compare - ✔✔
